Improved die for forming carriage-shackles



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Letters Patent No. 101,952, dated .April 12, 1870.

IMPROVE!) DIE PQR FORMING- CARRIAGE-SHACKLES.

The Schedule referred to in these Letters Patent and making part of the same I, LE ROY S. WHITE, of Plantsville, in the county of Hartford and State of Connecticut, have invented anew and useful Improvement in Forging Carriage- Shackles, of which-the following is a specihcation.

My invention consists in the employment of dies and clamps for holding a part of the shackle while the other parts are formed by upsetting the metal `which forms the ears and body ofthe shackle, whereby I an enabled to form square corners at the junction of the ears and body, and also forge the shackles of uniform shape.

In the accompanying drawings- Figure 1 is a perspective view of the main die and one ofthe side dies employed by my invention; and l Figure 2,`a sectional view of the same, together with the other side die and a shackle in the same ready'to be operated on. Thissection is taken through the cen` ter of the ears of the shackle and the corresponding parts of thedies.

The blank is formed in any of the ordinary dies for forming the same, with the exception that the portion .designed to be formed into the ears of the shackle is left about three-sixteenths of an inch longer on each side than in the ordinary blanks for the same sized shackles. The ears of the blank are then bent up in a suitable press or drop,'in the usual manuel', but of dilierent form.

Instead of trying to form the ears witlnsquare cornels, I form them into the fonn shown in fig. 2, in which the corners of the ears a a are rounding, and the body b between them `somewhat curved.

A designates the main or center die, which is provided with a projection or elevation, B, in its center, the top of which is recessed in the desired form of the inside of the shackle.

The width of elevation B is equal to the distance between the ears a a of the forged shackle.

On each side of the elevation B is a wing, C, provided with a curved recess, c, to receive theends of the ears a a.

The height from the bottom of the recesses c c to ear. The corners of elevation B at this point are removed or rounded, as most clearly shown in the section, iig. 2.

0n each side of the dieA is a die, D, having a recess, d, on their inside sides, which, when taken in couuection with the recess c, is of the proper form of the ears a a. .o The dieA is firmly secured to a bed, while the dies D D are arranged to move to and from the die A when'desired.

The shackle, with its ears a a. and body b, formed as before described, is heated and placed on the die A,

'when the side dies D D are brought up to the same,

as shown in fig. 2, and firmly held in place by any proper mechanism.

A die with a plain and smooth surface is dropped or pressed upon the upper side of the shackle, which upsets the metal and compresses it into thespace between the broken lines and sides of the dies A and D, and tillin g all the cavities in the same, whereby the corners at the outer junction of the -body b and ears a a are formed plump andsquare. o

As the corners of the elevation B in the die A are rounded, the inside corners of the shackle are filled with metal, which in no wise injures the utility of the shackle, and avoids or prevents the forming of a iiaw or cold sheet at said corners while being forged.

I claim as my iuvention- The dies A and D D, arranged with proper griping mechanism, and constructed with rounded corners at the point for forming the inside corners ofthe ears and body of the shackle, all substantially as and for the purpose described.

LE 'ROY S. WHITE.

Witnesses:

GEO., W. BAILEY, WILSON W. KNowLEs. 

